Table 2:

Texture features extracted from ROIs of GBM images

Feature Group/Feature IDDescription
CM features
    CM1Energy
    CM2Contrast
    CM3Correlation
    CM4Variance
    CM5Inverse difference moment
    CM6Sum average
    CM7Sum variance
    CM8Sum entropy
    CM9Entropy
    CM10Difference variance
    CM11Difference entropy
    CM12Information measures I of correlation
    CM13Information measures II of correlation
    RCM1–RCM13Range of corresponding features listed above
RLM features
    RLM1Short-run emphasis
    RLM2Long-run emphasis
    RLM3Gray-level nonuniformity
    RLM4Run-length nonuniformity
    RLM5Run percentage
    RLM6Low gray-level run emphasis
    RLM7High gray-level run emphasis
    RLM8Short-run low gray-level emphasis
    RLM9Short-run high gray-level emphasis
    RLM10Long-run low gray-level emphasis
    RLM11Long-run high gray-level emphasis
    RRLM1–RRLM11Range of corresponding features listed above
Histogram-based features
    H1Mean
    H2Entropy
    H3Uniformity
    H4SD
    H5Smoothness
    H6Skewness
    H7Third-order moment
    H8Kurtosis

  • Note:—ID indicates identification; RCM, range of co-occurrence matrix; RRLM, range of run-length matrix; H, histogram.